evidence for the carcinogenicity of antimony trioxide in experimental
animals. On the other hand, the U.S. Environmental Protection Agency
(USEPA) and the German Research Community have listed Sb as a priority
pollutant but it has not been classified for carcinogenicity. In contrast
to As, there is evidence that Sb is not detoxified viamethylation in mammals,
but themechanism responsible for antimony's genotoxicity is not
clearly known.